The creativity of drug patent can be considered from many aspects, including whether the ingredients of the formula and the ratio between ingredients are different from the existing technology, whether your ingredients and ratio can surpass similar products or unexpected technical effects; It also includes the preparation method of the medicine, whether it solves the problems existing in the existing preparation method and achieves better technical effects. You can apply for a patent if you have such conditions.
Whether it is listed or not can be inquired through the information published on the website of the Food and Drug Administration, which has nothing to do with the patent application.